CN105644570A - Novel railway truck for piggyback type transportation - Google Patents

Abstract

The invention discloses a new type of railway freight car for piggyback transportation. The new type of railway freight car includes a pallet and a ground lifting and rotating device, wherein the pallet can be stacked on the underframe of the railway freight car for placing the piggyback transportation. The road truck or road semi-trailer; the ground lifting and rotating device is set on the ground, and is used to drive the pallet to a predetermined height relative to the chassis, and then drive it to rotate relative to the chassis along the arc-shaped guide rail in the horizontal plane. Compared with the prior art, the advantage of this new type of railway wagon is that the chassis of the traditional railway wagon can basically be used, and there is no need to provide a special underframe for piggyback transportation, thereby reducing the manufacturing cost of the railway wagon for piggyback transportation. In addition, the loading and unloading process can be completed only by turning the lighter pallet, which reduces the power performance requirements for the on-board rotating device.

Description

A new type of railway wagon for piggyback transportation

technical field

The invention relates to the technical field of the structure of a railway freight car for piggyback transportation, in particular to a novel railway freight car for piggyback transportation.

Background technique

"Packyback transport" is a combination of road and rail transport.

In the process of "piggyback transportation", the tractor drives the road truck or road semi-trailer carrying the container directly onto the railway platform car, parks and unhooks it and leaves; the container road truck or road semi-trailer is transported to the front by the railway vehicle At the mounting point, the tractor at the destination drives the flatbed truck onto the chassis or trailer, and then directly transports it to the destination.

"Packy-back transport" speeds up vehicle turnover, expands the cargo unit, saves loading and unloading or mounting operation time, and improves operating efficiency.

At present, the underframe of railway wagons commonly used for piggyback transportation in China is composed of a fixed underframe and a rotating underframe longitudinally spliced, and the rotating underframe is driven by a vehicle-mounted rotating device to rotate along a predetermined track relative to the fixed underframe. To connect with the ground for loading and unloading. After the loading and unloading is completed, reverse rotation to the initial position.

Although this kind of railway wagon can completely fulfill the requirements of piggyback transportation, there are problems such as complex structure and heavy weight in practical application.

In view of this, there is an urgent need in the art to provide a new type of railway wagon with a simple structure for piggyback transportation, so as to solve the technical problems existing in the existing railway wagons.

Contents of the invention

The core purpose of the present invention is to provide a novel railway wagon for piggyback transportation with simple structure and convenient operation.

This new type of railway freight car includes a pallet and a ground lifting and rotating device, wherein the pallet can be stacked on the chassis of the railway freight car to be used for placing a road freight car or a road semi-trailer for piggyback transportation; the ground lifting and rotating device is arranged on the ground It is used to drive the pallet to rotate relative to the bottom frame along the arc-shaped guide rail in the horizontal plane after the pallet is raised and lowered to a predetermined height relative to the bottom frame.

Compared with the prior art, the advantage of this new type of railway wagon is that the chassis of the traditional railway wagon can basically be used, and there is no need to provide a special underframe for piggyback transportation, thereby reducing the manufacturing cost of the railway wagon for piggyback transportation. In addition, the loading and unloading process can be completed only by turning the lighter pallet, which reduces the power performance requirements for the on-board rotating device.

Optionally, the ground lifting rotating device includes an arc-shaped guide rail and two columns fixed to both ends of the guide rail of the arc-shaped guide rail and used to support the arc-shaped guide rail, and the slider of the arc-shaped guide rail has Two cantilever arms respectively located on the left and right sides of the road truck or the road semi-trailer, and each of the cantilever arms is provided with a lifting element; the lower end of the movable part of the lifting element is hinged with a hook, and the lifting The component drives the pallet to lift relative to the bottom frame through the hook.

Optionally, the arc-shaped guide rail is left-right symmetrical with respect to the longitudinal centerline of the chassis.

Optionally, the lifting element is specifically a mechanical jack, a hydraulic jack, an inflatable jack or a hydraulic lifting cylinder.

Optionally, the cantilever is a hollow tube, and the fixing part of the lifting element is installed in the hollow tube.

Optionally, it also includes a ground auxiliary lifting element arranged on the ground, and the ground auxiliary lifting element and the two lifting elements of the ground lifting rotation device together form three non-colinear lifting points for the pallet.

Optionally, the ground lifting rotating device is located at one end of the base frame, and the ground auxiliary lifting element is located at the geometric center or the other end of the base frame.

Optionally, the fixed part of the ground auxiliary lifting element is located on the ground, and its movable part passes through the chassis and is inserted into the positioning groove of the tray. The movable part can be stretched relative to the fixed part to drive the The tray is raised and lowered relative to the chassis.

Optionally, the ground auxiliary lifting element is specifically a mechanical jack, a hydraulic jack, an inflatable jack or a hydraulic lifting cylinder.

Optionally, the pallet has lifting ears corresponding to the number of the hooks, and the lifting element pulls the pallet up and down relative to the chassis through the lifting ears.

Optionally, the pallet includes a chassis fixed to each other, a left baffle and a right baffle, and the road truck or the road semi-trailer can be placed on the chassis.

Optionally, the pallet has several lifting lugs, so that the pallet can be hoisted from or into the chassis by a lifting device.

Optionally, in the transportation state, the pallet and the chassis are connected by several positioning pins.

Description of drawings

Fig. 1 shows the front view structural representation of the novel railway wagon provided by the present invention;

Fig. 2 shows the top view structure schematic diagram under the loading and unloading state of the novel railway wagon shown in Fig. 1;

Fig. 3 shows the schematic diagram of the front view structure of the single-section vehicle after the new railway freight car shown in Fig. 1 is removed from the road freight car;

Figure 4 shows a schematic view of the structure of Figure 1 to A;

Figure 5 shows a schematic structural view of the tray.

The corresponding relationship between the reference signs and the names of the various parts in Fig. 1 to Fig. 5 is:

1 chassis;

2 road trucks;

3 pallets: 31 lugs;

4 ground lifting rotating device:

40 curved guide rail, 41 guide rail, 42 slider, 43 column, 44 cantilever, 45 fixed part, 46 movable part, 47 hook;

5 Ground-assisted lifting elements.

detailed description

The core of the present invention is to provide a novel railway wagon for piggyback transportation with simple structure.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

It should be noted that the front and rear, up and down, left and right directions mentioned in this article are all referenced to the railway freight car, and the direction parallel to the traveling direction of the railway freight car is the longitudinal direction. In the longitudinal direction, the direction pointed by the traveling direction is the front, and The direction opposite to the direction is the rear; in the plane parallel to the running track surface of the railway freight car, the direction perpendicular to the longitudinal direction is the transverse direction, and in the transverse direction, the direction on the left hand side is the left hand side, and the direction on the right hand side is the direction in the transverse direction. is the right; the direction perpendicular to the track surface of the railway freight car is the vertical direction, in the vertical direction, the direction close to the track surface is down, and the direction away from the track surface is up.

Please refer to Fig. 1 and Fig. 2, wherein, Fig. 1 shows the front structural schematic view of the novel railway freight car provided by the present invention, and Fig. 2 shows the top view structural representation under the loading and unloading state of the novel railway freight car shown in Fig. 1 .

1 and 2, it can be known that the new railway wagon provided by this specific embodiment includes several sections of vehicles sequentially connected in the longitudinal direction, and each section of vehicles includes an underframe 1, a bogie fixed and supported on both ends of the underframe 1, and a A wheel pair is rotatably connected to each chassis 1 . It should be noted that the structures of the underframe 1, the bogie and the wheelset and the connection relationship between the three are the same as those of the railway freight car in the prior art, and those skilled in the art can fully realize it based on the prior art, so this article I won't repeat them here.

In addition, the new railway wagon also includes a pallet 3 , a ground auxiliary lifting element 5 and a ground lifting rotating device 4 . Wherein, the pallet 3 can be stacked on the underframe 1 of the railway freight car, so as to place the road freight car 2 or the road semi-trailer for piggyback transportation; It is used to drive the tray 3 up and down relative to the base frame 1; the ground lifting and rotating device 4 is arranged on the ground to drive the tray 3 relative to the base frame 1 to a predetermined height, and then drive it relative to the base frame 1 along an arc in the horizontal plane The shape guide rail 40 rotates so that the pallet 3 rotates to the loading and unloading state from the transport state (in this state, the pallet 3 is carried by the chassis 1 and basically coincides with the chassis 1), and the end of the pallet 3 is connected to the ground under the loading and unloading state. Thereby road wagon 2 rolls into or rolls out of railway wagon. In order to better understand the specific structure of this new type of railway freight car, please also refer to Figure 3, which shows a schematic front view of the new type of railway freight car shown in Figure 1 with the road freight car removed.

Wherein, the tray 3 includes a fixed chassis, a left side baffle and a right side baffle, the chassis is provided with tire placement holes for preventing the tires of the 2 parts of the road truck, and the left side baffle and the right side baffle are welded. On the chassis, or the chassis, the left baffle and the right baffle are integrally formed by casting, and the road truck 2 can be placed on the chassis.

The ground auxiliary lifting element 5 is specifically a hydraulic lifting cylinder, and its cylinder body (fixed part) is placed on the ground, and its piston rod (movable part) passes through the chassis 1 and is inserted into the positioning groove of the tray 3. By controlling its piston rod relative to The cylinder expands and contracts to push the pallet 3 up and down relative to the bottom frame 1 . In addition, the tray 3 can rotate around the piston rod relative to the bottom frame 1 along the arc-shaped guide rail 40 under the driving action of the ground lifting and rotating device 4 .

As shown in FIG. 4 , this figure shows a schematic diagram of the structure along the direction A of FIG. 1 . The ground lifting rotating device 4 comprises an arc guide rail 40 and two columns 43 which are used to support the arc guide rail 40 at both ends of the guide rail 41 fixedly connected to the arc guide rail 40, and the slide block 42 of the arc guide rail 40 has a Two cantilevers 44 on the left and right sides of the road truck 2 or the road semi-trailer, each cantilever 44 is provided with a lifting element, and the lower end of the lifting element is hinged with a hook 47 for matching the lifting lug of the pallet 3 .

It should be noted that, in this specific embodiment, the lifting element specifically adopts a hydraulic lifting cylinder, the cylinder body (fixed part 45) of the hydraulic lifting cylinder is fixedly connected to the cantilever 44, and the lower end of the piston rod (moving part 46) is hinged with a suspension. Hook 47, hydraulic lifting cylinder has many advantages such as strong lifting capacity.

It can be understood that, on the basis of satisfying the requirements of the function, processing and assembly technology of the lifting tray 3, the lifting element can also be a mechanical jack, a hydraulic jack or an inflatable jack.

Further, the cantilever 44 in this specific embodiment is a hollow tube, and the cylinder body (fixed part 45) of the hydraulic lifting cylinder is installed in the hollow tube. In the fixing part 45, the problem that the hydraulic lifting cylinder is subjected to rain due to being placed in the open air is cleverly solved, and then the service life of the lifting element can be prolonged.

Likewise, based on the same precondition, the aforementioned ground auxiliary lifting element 5 can also be a mechanical jack, a hydraulic jack or an air-filled jack.

Furthermore, as shown in FIG. 2 , the arc-shaped guide rails 40 of the ground lifting and rotating device 4 are symmetrically arranged left and right with respect to the longitudinal centerline of the chassis 1 . In this way, the ends of the pallet 3 can be connected to the ground on the left and right sides of the vehicle respectively, forming two-way passages for the road truck 2 or road semi-trailer to drive in/out, which can be selected according to actual needs when loading and unloading Any path, so that the loading and unloading of railway wagons is more convenient and efficient.

In addition, the ground auxiliary lifting element 5 is located at the geometric center of the tray 3, so that the weight of the tray 3 relative to the rotation axis can be distributed evenly and symmetrically, which can avoid the imbalance problem of the tray 3 during the rotation process, and then ensure its rotation stability and safety.

Certainly, on the basis of satisfying the rotating function of the drive tray 3 and the requirements of the assembly process, the rotation axis of the vehicle-mounted rotating device is located at either end of the chassis 1 and the tray 3, that is, the rotation axis of the tray 3 relative to the chassis 1 is located between the tray 3 and the tray 3. Any position of chassis 1.

It can be seen from the schematic diagram of the front view structure of the pallet shown in FIG. 5 that four lifting lugs 31 are also provided on the pallet 3. The four lifting lugs 31 are divided into two groups and arranged symmetrically with respect to the longitudinal centerline of the pallet 3. So that the pallet 3 can be hoisted away from or hoisted into the underframe 1 by the hoisting device for maintenance or replacement.

Further, the bottom frame 1 and the pallet 3 are positioned and locked by four positioning pins, so as to prevent the pallet 3 from shifting and dislocation due to vibration during transportation. In detail, the four positioning pins are divided into two groups and arranged symmetrically with respect to the longitudinal centerline of the tray 3 , and the corresponding positions of the chassis 1 and the tray 3 are provided with positioning pin holes for the positioning pins to pass through.

Finally, it should be noted that the number of lifting ears 31 on the tray 3 and positioning pins for positioning and locking the tray 3 and the chassis 1 is not limited to the number shown in this specific embodiment. On the basis of meeting the respective functional needs, those skilled in the art can make adjustments according to actual needs, and the number adjustments for the lifting ears 31 on the tray 3 and the positioning pins for positioning and locking the tray 3 and the chassis 1 all fall into the scope of the present invention. within the scope of protection.

The working principle of this piggyback railway wagon is as follows:

First, start the ground auxiliary lifting element 5 and the ground lifting rotating device 4 at the same time to form three non-collinear lifting points for the pallet 3, and then continue to control the lifting element of the ground lifting rotating device 4 and the ground auxiliary lifting element 5 to drive the pallet 3 Rise until completely detached from the chassis 1;

Secondly, control the arc-shaped guide rail 40 of the ground lifting and rotating device 4 to make the slider under the action of its power element, drive the tray 3 to rotate along its guide rail 41 until the end of the tray 3 connects with the ground;

Then, drive the road truck 2 or the road semi-trailer into the pallet 3 completely;

Finally, the pallet 3 is reversely pushed by the ground lifting rotation device 4 until it returns to its initial position, and then the ground auxiliary lifting element 5 and the ground lifting rotation device 4 are activated simultaneously to lower the pallet 3 to be completely carried by the chassis 1, and then The ground auxiliary lifting element 5 is retracted into the transport state.

It should be noted that the unloading process of piggyback transport is basically the same as the above-mentioned loading process, and those skilled in the art can directly and unambiguously implement the unloading process by referring to the above-mentioned operation process, so it will not be repeated here.

Compared with the prior art, the advantage of this new type of railway wagon is that the chassis of the traditional railway wagon can basically be used, and there is no need to provide a special underframe for piggyback transportation, thereby reducing the manufacturing cost of the railway wagon for piggyback transportation. In addition, the loading and unloading process can be completed only by rotating the lighter pallet 3, which reduces the power performance requirements of the vehicle-mounted rotating device.

As mentioned above, in this specific embodiment, the ground lifting rotating device 4 and the ground auxiliary lifting element 5 work together to form three non-collinear lifting points for the pallet 3, which ensures the stability and safety of the pallet lifting.

It can be understood that the new railway freight car may also only include the ground lifting and rotating device 4, for example: the ground lifting and rotating device 4 is arranged at one end of the chassis, one end of the tray 3 is lifted, and the other end is against the upper surface of the chassis 1 The slider 42 drives the tray 3 to rotate around the contact point between the tray 3 and the chassis, or the ground lifting rotating device 4 is arranged in the middle of the chassis, and the tray 3 is lifted from the middle to completely break away from the support of the chassis 1. The block 42 drives the tray 3 to rotate relative to the chassis 1 .

The above descriptions are only preferred embodiments of the present invention, and do not constitute a limitation to the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (13)

1. A novel railway wagon for piggyback transport, characterized in that it comprises: The pallet (3) can be stacked on the underframe (1) of the railway freight car, and is used to place the road freight car (2) or road semi-trailer for piggyback transportation; The ground lifting and rotating device (4), which is installed on the ground, is used to drive the tray (3) relative to the base frame (1) to a predetermined height, and then drive it to move along the horizontal plane relative to the base frame (1). The arc guide rail (40) rotates. 2. The novel railway freight car according to claim 1, characterized in that, said ground lifting rotating device (4) comprises an arc guide rail (40) and a guide rail (41) fixedly connected to said arc guide rail (40) The two ends are used to support the two columns (43) of the arc guide rail (40), and the slider (42) of the arc guide rail (40) has a Two cantilever arms (44) on the left and right sides of the semi-trailer, and each of the cantilever arms (44) is provided with a lifting element; the lower end of the movable part (45) of the lifting element is hinged with a hook (47), so The lifting element drives the pallet (3) to lift relative to the bottom frame (1) through the hook (47). 3. The new railway freight car according to claim 2, characterized in that, the arc-shaped guide rail (40) is left-right symmetrical with respect to the longitudinal center line of the chassis (1). 4. The new railway freight car according to claim 2, characterized in that, the lifting element is specifically a mechanical jack, a hydraulic jack, an inflatable jack or a hydraulic lifting cylinder. 5. The new railway freight car according to claim 2, characterized in that, the cantilever (44) is a hollow tube, and the fixing part (45) of the lifting element is installed in the hollow tube. 6. The novel railway freight car according to any one of claims 2 to 5, characterized in that, it also includes ground auxiliary lifting elements (5) arranged on the ground, and said ground auxiliary lifting elements (5) are connected to said ground lifting elements. The two lifting elements of the rotating device (4) jointly form three non-colinear lifting points for the pallet (3). 7. The new railway freight car according to claim 6, characterized in that, the ground lifting rotating device (4) is located at one end of the underframe (1), and the ground auxiliary lifting element (5) is located at the end of the chassis (1). The geometric center or the other end of the chassis (1). 8. The new railway freight car according to claim 6, characterized in that, the fixed part of the ground auxiliary lifting element (5) is located on the ground, and its movable part penetrates the underframe (1) and is inserted into the pallet (3 ), the movable part can expand and contract relative to the fixed part, so as to drive the tray (3) to lift relative to the chassis (1). 9. The new railway freight car according to claim 8, characterized in that, the ground auxiliary lifting element (5) is specifically a mechanical jack, a hydraulic jack, an inflatable jack or a hydraulic lifting cylinder. 10. The novel railway wagon according to claim 4, characterized in that, the pallet (3) has lifting lugs (31) that are in the same number as the hooks (47) and are set correspondingly, and the lifting elements pass through the lifting lugs (31). The lifting lug (31) pulls the tray (3) up and down relative to the bottom frame (1). 11. The novel railway wagon according to claim 6, characterized in that, the pallet (3) comprises a chassis, a left side baffle and a right side baffle which are fixedly connected to each other, and the road wagon (2) or the A road semi-trailer can be placed on the chassis. 12. The new railway freight car according to claim 6, characterized in that, the pallet (3) has several lifting lugs (31), so that the pallet (3) can be hoisted from or into the bottom by a lifting device. rack (1). 13. The new railway freight car according to claim 6, characterized in that, in the transportation state, the pallet (3) and the chassis (1) are connected by several positioning pins.